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Information card for entry 2016807
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| Coordinates | 2016807.cif |
|---|---|
| Structure factors | 2016807.hkl |
| Original IUCr paper | HTML |
| Chemical name | pyridazine‒2,5-dichloro-3,6-dihydroxy-<i>p</i>-benzoquinone (2/1) |
|---|---|
| Formula | C14 H10 Cl2 N4 O4 |
| Calculated formula | C14 H10 Cl2 N4 O4 |
| Title of publication | Hydrogen bonding in 1,2-diazine‒chloranilic acid (2/1) and 1,4-diazine‒chloranilic acid (2/1) determined at 110 K |
| Authors of publication | Gotoh, Kazuma; Asaji, Tetsuo; Ishida, Hiroyuki |
| Journal of publication | Acta Crystallographica Section C |
| Year of publication | 2008 |
| Journal volume | 64 |
| Journal issue | 10 |
| Pages of publication | o550 - o553 |
| a | 3.7294 ± 0.00013 Å |
| b | 20.095 ± 0.0005 Å |
| c | 9.6217 ± 0.0002 Å |
| α | 90° |
| β | 98.8484 ± 0.0011° |
| γ | 90° |
| Cell volume | 712.49 ± 0.03 Å3 |
| Cell temperature | 110 ± 1 K |
| Number of distinct elements | 5 |
| Space group number | 14 |
| Hermann-Mauguin space group symbol | P 1 21/c 1 |
| Hall space group symbol | -P 2ybc |
| Residual factor for all reflections | 0.0343 |
| Residual factor for significantly intense reflections | 0.0299 |
| Weighted residual factors for significantly intense reflections | 0.0824 |
| Weighted residual factors for all reflections included in the refinement | 0.0835 |
| Goodness-of-fit parameter for all reflections included in the refinement | 1.081 |
| Diffraction radiation wavelength | 0.71075 Å |
| Diffraction radiation type | MoKα |
| Has coordinates | Yes |
| Has disorder | No |
| Has Fobs | Yes |
| Revision | Date | Message | Files |
|---|---|---|---|
| 180837 (current) | 2016-04-02 | cif/2/01/ (antanas@echidna) Replacing _[local]_cod_* tags with their equivalents from the COD CIF dictionary in multiple entries in subrange 2/01/68. |
2016807.cif 2016807.hkl |
| 176760 | 2016-02-20 | cif/2/ (antanas@kurmis) Replacing _[local]_cod_* tags with their equivalents from the COD CIF dictionary in multiple entries in subrange 2/01. |
2016807.cif 2016807.hkl |
| 91933 | 2013-12-28 | cif/ (saulius@koala.ibt.lt) Adding DOIs that could be assigned unambiguously to the range 2x CIFs. |
2016807.cif 2016807.hkl |
| 88064 | 2013-08-29 | Adding _cod_database_fobs_code data item to all COD CIFs that have Fobs deposited and did not have this data item yet. | 2016807.cif 2016807.hkl |
| 32112 | 2012-02-03 | cif/: committing an update of 45+ thous files, with information appended from the originals. | 2016807.cif 2016807.hkl |
| 26848 | 2011-09-28 | cif/2/, hkl/2/, html/ Reorganising CIFs of the range 2* into the "prefix-directory" tree. |
2016807.cif 2016807.hkl |
| 26029 | 2011-09-17 | cif/2/ Reverting changes of revision 25271: ( cd cif/2/; svn merge -r25271:25270 . ) The problem was that the reprocessed files from IUCr, although were more complete, "resurrected" data errors that were corrected in the previous recisions. The additional data that have been extracted during the reprocessing will have to be merged without overwriting the existing values in COD files, except some explicit and controlled cases (such as publication titles and chemical names). |
2016807.cif 2016807.hkl |
| 25271 | 2011-09-10 | cif/2/ Adding reporocessed IUCr CIFs for the years 1980-2010. The CIFs now contain more complete bibliography, substance names, correctly unfolded text fields (using the CIF line unfolding protocol), explicitely set cell angles, and _cod_data_source_block fields. |
2016807.cif 2016807.hkl |
| 966 | 2010-01-30 | cif/ Adding _cod_database_code tags to all COD entries. Adding tag description to the cif_cod.dic dictionary so that COD entries can be validated. |
2016807.cif 2016807.hkl |
| 903 | 2009-11-23 | cif/ Setting svn:keywords property on those CIFs that did not have them. |
2016807.cif 2016807.hkl |
| 691 | 2009-05-03 | Depositing the first portion of the Fobs data CIFs. These are CIFs from the Acta Cryst. journals, where the correspondence of the coordinate CIF and the Fobs CIF could be unambiguously determined automatically. In these files, cell constatnts match exctely, being equal with the floating point '==' operator in Perl. For the future depositions, such requirement is too strict, since sometimes cell constants in the coordinate and the Fobs files differ by a rounding error. Thus, a small tollerance will have to be introduced into the COD Fobs deposition scripts. |
2016807.cif 2016807.hkl |
| 601 | 2009-03-27 | Adding CIFs deposited from Acta-Cryst-C-2008_09-12/. |
2016807.cif |
All data in the COD and the database itself are dedicated to the
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Users of the data should acknowledge the original authors of the
structural data.